Swiss Coffee is one of Benjamin Moore's great warm whites — it's got just enough creamy yellow undertone to feel soft and lived-in without tipping into magnolia. The mistake people make is treating it like a crisp gallery white and pairing it with a contrasting bright trim. Don't. It wants the opposite approach.
Use it as a unifying envelope. Run Swiss Coffee across the walls, ceiling and woodwork together. That tonal treatment lets the warmth wrap the whole room rather than fighting a cool trim white that'll make the walls look dingy by comparison. Depth comes from your furniture, not your skirting — smoked oak, walnut, anything with grain and warmth.
Then layer warm naturals: linen, sisal, undyed wool, stoneware. The colour's doing the quiet work, so the textures carry the interest.
For actual paint accents, keep them muted and earthy. Mylands Artichoke BH.13 (LRV 27.6) is a lovely soft olive-green that sits beautifully against the cream — use it on a feature wall, a cabinet, or built-in joinery. For something deeper and more grounding, Dulux Sapphire Springs 1 (LRV 6.4) gives you a near-black with warmth in it for a single accent moment — a fireplace surround or an interior door — without going stark.
If you want a lighter companion in an adjoining space, Paint & Paper Library Slate IV (LRV 67.5) carries enough light to flow naturally from a Swiss Coffee room while shifting the tone slightly.
What to avoid: cool blues, sharp greys and true blacks. They'll make Swiss Coffee read yellow and dated rather than soft and warm. A cool slate-blue next to it is the single most common way people kill this colour.
My practical advice — test it large, on at least two walls, and view it in evening lamplight as well as daylight. Warm whites like this come alive under warm artificial light and that's where you'll really see whether it's right for the room.